Shoddy-picker



A. J. PERRON Jan. 23, 1934.

SHODDY PICKER Filed March 4, 1932 Swvowboz o4 1 Peri-02v Patented Jan. 23, 1934 UNITED STATES PATENT OFFICE This invention relates to the pins or teeth of shoddy-pickers and has for its object to provide a picker pin which will make a clean cut through the stock and will prove durable. Various forms of pins have been provided heretofore but most of them weremade from wire and either originally had a round edge presented to the work or soon acquired a round edge and, therefore, failed to cut cleanly so that portions of the stock would cling to the pin and the machine would either become totally clogged or would require high power to drive it besides failing to give desired results in the treatment of the stock. My invention provides a pin which will present a sharp cutting edge to the material during its entire life and which may be produced at a very low cost. The invention is illustrated in the accompanying drawing and consists in a certain novel construction which will be hereinafter first fully described and then more particularly defined in the claim. 7

In the drawing, Figure 1 is a side elevation of a picker pin or tooth constructed in accordance with my invention, the drawing showing it in working position,

Fig. 2 is a view similar to Fig. 1 but showing the edge of the picker pin,

Fig. 3 is an enlarged cross section on the line 3-3 of Fig. 1,

Fig. 4 is an enlarged section on the line 4-4 of Fig. 1.

The lag or cylinder cover, a portion of which is shown at 1, is of the usual material and construction and has holes 6 bored therethrough at proper intervals to receive the head or butt of the picker pin. In carryingv out my invention, I employ a blank which is preferably of cast steel and has a square cross section, as shown in Fig. 4. This blank is subjected to the action of a press through a greater portion of its length so that it will be flattened, an end portion 2 being left in its square form to form a head or butt which will embed itself in the material at the inner end of the opening provided in the lag or cover and thereby retain the pin in its working position. When the blank is subjected to pressure, a shank 3 will be formed which, in side view, will expand rectangular and presents sharp corners. The narrow edge of the pin is presented to the work and as it is formed of cast steel and its corners are right angles, it will cut readily through the shoddy stock without causing shreds to hang upon the 0 point and will, therefore, impose minimum strain upon the machine. The pins or teeth are driven through the lag from the inner side thereof, the points or tapered ends being first inserted in the openings, and the sharp corners will cut into the 5 material of the lag so as to reshape the hole and snugly embed the pin. The widening of the shank at the neck thereof or junction of the same with the head produces oppositely disposed fins which embed themselves in the walls of the opening in the lag and serve to firmly anchor the pins within the openings and assist in preventing rotation of the pins in said openings. The shoulders produced at the junction of the shank and head also form stops to avoid forcing of the pin into the lag to such an extent that it will split the lag and will assure uniform length of the working portions of the several pins. There is sometimes a tendency of the pins to enlarge the openings in the lag, through long-continued use, and to so meet this contingency, I provide the pins in graduated sizes so that when the hole in the lag becomes worn to such an extent that the pin is loose therein, the old pin may be removed and a pin having a larger head may be substituted g5 therefor. By this procedure I avoid discarding a lag which has been used for a comparatively short time, and thereby reduce the overhead cost in the plant. My pin is exceedingly efiicient and may be produced at a very low cost.

Having thus described the invention, I claim,

The combination with a lag having a picker receiving opening formed therein circular in cross section, of a shoddy picker seated in said opening and comprising an elongated body one end of which is provided with a square head and its other end projected longitudinally beyond the lag and tapered and rectangular in cross section to form sharpened edges at each side thereof, the intermediate portion of the body being flattened transversely to produce a shank of less thickness but of greater width than the head to form side fins for engagement with the walls of the opening in the lag, the side edges of the shank gradually merging into the adjacent side edges of the tapered end of the body.

ARTHUR J. PERRON. 

